IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Regular Section
Two Dimensional Non-separable Adaptive Directional Lifting Structure of Discrete Wavelet Transform
Taichi YOSHIDATaizo SUZUKISeisuke KYOCHIMasaaki IKEHARA
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ジャーナル 認証あり

2011 年 E94.A 巻 10 号 p. 1920-1927

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抄録
In this paper, we propose a two dimensional (2D) non-separable adaptive directional lifting (ADL) structure for discrete wavelet transform (DWT) and its image coding application. Although a 2D non-separable lifting structure of 9/7 DWT has been proposed by interchanging some lifting, we generalize a polyphase representation of 2D non-separable lifting structure of DWT. Furthermore, by introducing the adaptive directional filteringingto the generalized structure, the 2D non-separable ADL structure is realized and applied into image coding. Our proposed method is simpler than the 1D ADL, and can select the different transforming direction with 1D ADL. Through the simulations, the proposed method is shown to be efficient for the lossy and lossless image coding performance.
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© 2011 The Institute of Electronics, Information and Communication Engineers
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